<template>
 <!-- 头部部分 -->
    <header class="header">
      <h1>todos</h1>
      <input class="new-todo" placeholder="请输入任务名称" autofocus @keyup.enter="addList" v-model.trim="name"/>
    </header>
</template>
 
<script>
export default {
  name: "HmHeader",
  methods: {
    addList(){
      if(!this.name)return alert('内容不能为空')
      this.$emit('addList',this.name)
      this.name = ''
    }
  },
  data() {
    return {
      name:''
    };
  },
};
</script>

<style scoped>
     
</style>